Planned Chaos (LvMI)

by Ludwig von Mises

It is, first of all, necessary to comprehend that in the field of purposive human action and social relations no experiments can be made and no experiments have ever been made. The experimental method to which the natural sciences owe all their achievements is inapplicable in the social sciences. The natural sciences are in a position to observe in the laboratory experiment the consequences of the isolated change in one element only, while other elements remain unchanged. Their experimental observation refers ultimately to certain isolable elements in sense experience. What the natural sciences call facts are the causal relations shown in such experiments. Their theories and hypotheses must be in agreement with these facts. But the experience with which the sciences of human action have to deal is essentially different. It is historical experience. It is an experience of complex phenomena, of the joint effects brought about by the co-operation of a multiplicity of elements. The social sciences are never in a position to control the conditions of change and to isolate them from one another in the way in which the experimenter proceeds in arranging his experiments. They never enjoy the advantage of observing the consequences of a change in one element only, other conditions being equal. They are never faced with facts in the sense in which the natural sciences employ this term. Every fact and every experience with which the social sciences have to deal is open to various int...